Naturopathic Physicians can offer you the widest range of tests for allergies. It is not a good idea to do tests at home because of the potential risks involved (i.e., if skin tests are done, you could potentially have a serious allergic reaction; blood tests are not advisable to be done at home unless done by a trained licensed nurse or phlebotomist).

http://naturopaths.healthprofs.com/cam/cities/losangeles-Naturopaths.html is a website you can go to that has listings of California certified Naturopaths.

If you want to stick with traditional allergy tests (i.e., tests that only look for immediate type reactions), then you would want to check the directory listings for Allergy and Immunology specialists. Here's a link to UCLA's Allergy department to get you started:http://www.uclahealth.org/body.cfm?xyzpdqabc=0&id=861&action=detail&limit_department=15&limit_division=1006&limit_program=0

There is no one allergy test that is 100% accurate. Discuss which test(s) are best for your situation with whoever you consult with about allergy testing. And feel free to post your results or ask questions here about your results....there are a lot of smart folks here who can help you implement any changes necessary as a result of the testing.

Yes, Naturopaths typically do blood food allergy tests (ELISA IgG, ALCAT, and sometimes RAST IgE). Some also do NAET testing and treatment (www.naet.com ~ I have no financial connections with this site/company, but have gone through the "basic 10" treatments), which uses applied kinesiology (muscle testing) to determin allergies (more subjective, but able to test anything you can touch, so can treat more allergies).